<div dir="ltr">Hi,<br><br>I have two nodes Interconnected using Infiniband, and using Intel-MPI over dapl1.2.7 from OFED 1.3.1 compiled localy on the same build, when there is interconnect communication i can see on one of the nodes that i monitoring have a high cpu utiliztion (%system) that exceeds 60%. the mpi job is helloworld/pallas runing over two nodes, 8 cores each (16 processes in total) <br>
<br>a snapshot of mpstat -P ALL on one node<br>06:22:20 PM CPU %user %nice %system %iowait %irq %soft %idle intr/s<br>06:22:22 PM all 30.25 0.00 69.75 0.00 0.00 0.00 0.00 1768.50<br>06:22:22 PM 0 30.00 0.00 70.00 0.00 0.00 0.00 0.00 566.50<br>
06:22:22 PM 1 30.50 0.00 69.00 0.00 0.00 0.00 0.00 201.00<br>06:22:22 PM 2 30.50 0.00 69.50 0.00 0.00 0.00 0.00 0.00<br>06:22:22 PM 3 29.50 0.00 70.50 0.00 0.00 0.00 0.00 0.00<br>
06:22:22 PM 4 28.50 0.00 71.00 0.00 0.00 0.00 0.00 0.00<br>06:22:22 PM 5 30.00 0.00 70.00 0.00 0.00 0.00 0.00 0.00<br>06:22:22 PM 6 31.00 0.00 69.50 0.00 0.00 0.00 0.00 1000.50<br>
06:22:22 PM 7 32.00 0.00 68.00 0.00 0.00 0.00 0.00 0.00<br><br>now i get the same behaviour on RHEL5.0/5.1 and RHEL4.6, using Infiniband or ethernet, so is this normal, to me it does not, or at least i have never seen such behaviour before? the node is a DELL PE1950<br>
<br>regards<br><br>Walid<br></div>